Haystack
haystack.deepset.ai
Open-source framework by deepset for building LLM-powered search applications.
Quick Information
- Category:
- Coding
- Pricing:
- Freemium
- Platforms:
- Web
- Free Plan:
- Yes
- API Available:
- Yes
- Last Verified:
- September 2026
What Is Haystack?
Haystack, from deepset, is an open-source AI orchestration framework (MIT license, free) for building context-engineered, production-ready LLM applications — RAG pipelines, semantic search, conversational systems, and multimodal applications — with explicit control over retrieval, routing, memory, and generation. For organizations needing managed infrastructure, deepset offers two commercial tiers: Haystack Enterprise Starter (private support, deployment blueprints, flexible expansions) and Haystack Enterprise Platform (visual pipeline designer, data/retrieval/testing workflows, secure access controls, cloud or on-premises deployment) — both requiring direct sales contact since exact pricing isn't public and scales by organization size.
Its genuinely free, open-source core is a real strength for developers wanting full control without licensing cost: rather than being a limited free tier of a commercial product, the core Haystack framework is completely free and community-supported, with commercial offerings existing specifically for organizations needing managed infrastructure, visual tooling, and enterprise support rather than gating core functionality.
It's aimed at developers building production LLM applications who want an open-source, MIT-licensed framework with full pipeline control, with enterprise customers needing managed infrastructure or visual tooling requiring direct contact with deepset for custom pricing. See our Coding tools directory for related AI application frameworks like Flowise and Dify.
What Can You Use Haystack For?
RAG pipeline building
Builds retrieval-augmented generation pipelines with explicit control over retrieval and generation.
Semantic search implementation
Implements semantic search systems using the open-source framework.
Enterprise LLM application deployment
Deploys managed, enterprise-scale LLM applications via commercial tiers.
Haystack Features
- Open-source orchestration — Provides a free, MIT-licensed framework for building LLM applications.
- Explicit pipeline control — Gives developers explicit control over retrieval, routing, memory, and generation.
- Visual pipeline designer (Enterprise) — Provides a visual interface for building pipelines on the Enterprise Platform tier.
- Flexible deployment — Supports cloud or on-premises deployment on Enterprise tiers.
Who Is Haystack For?
- Developers building production LLM applications — Gets a genuinely free, open-source framework with full pipeline control.
- Enterprises needing managed infrastructure — Uses Enterprise Starter or Platform tiers for visual tooling and dedicated support.
Haystack Pros & Limitations
What We Like
- Genuinely free, open-source core framework under the permissive MIT license
- Explicit control over retrieval, routing, memory, and generation for production applications
- Commercial tiers add managed infrastructure and visual tooling without gating the core framework
Limitations
- No public pricing for Enterprise tiers — requires direct sales contact for a custom quote
- Enterprise pricing scales by organization size without a transparent published rate card
- Full production deployment at scale requires development expertise to configure pipelines effectively
Haystack Pricing
| Plan | Price | Main Features |
|---|---|---|
| Open-source | $0 | Full MIT-licensed framework, community support |
| Enterprise Starter | Custom | Private support, deployment blueprints, flexible expansions |
| Enterprise Platform | Custom | Visual pipeline designer, secure access controls, cloud/on-prem deployment |
Pricing was last verified September 2026. Check the official website for the latest pricing.
AI Listing Jungle Ranking
- Global Rank:
- #617
- Overall Score:
- 24.1/100
- Monthly Users:
- –
- Rank Change:
- ▼ 80
This ranking reflects AI Listing Jungle's own independent scoring methodology and is not an endorsement by Haystack or its company. How Our Rankings Work
Frequently Asked Questions
Is Haystack free?
Yes, the core framework is completely free and open-source under the MIT license.
What do the commercial tiers add?
Managed infrastructure, visual pipeline design, secure access controls, and enterprise support.
How much does Haystack Enterprise cost?
Pricing isn’t public and scales by organization size, requiring direct sales contact.
What can I build with Haystack?
RAG pipelines, semantic search, conversational systems, and multimodal applications.
Our Take
Haystack's genuinely free, open-source core under the MIT license gives developers real production-ready capability without licensing cost.
Enterprise tiers exist specifically to add managed infrastructure and visual tooling rather than gating the core framework's functionality behind a paywall.
Haystack Alternatives
Haystack Comparisons
Ready to try Haystack?
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